Here is a list, based on Microsoft Operating System, of the browsers to have in place for each.
Windows 7: **Note** Windows 7 is already end-of-life; however, Microsoft extended support doesn’t end until Jan 14, 2020. Depending on your eMDs’ Solution(s), Windows 7 will not be supported prior to or on this deadline to match Microsoft’s end-of-life support.
Windows 10/2012/2016:
iOS9, 10, X
Android 4.4.2, 5.0.0, 6.0, 7.0 (or later)
IMPORTANT NOTE: The list above does not include some of the oldest operating systems still in use. Windows XP and Windows 2003, for instance, are not on this list. The reason for that is that these operating systems have gone end-of-life. Microsoft no longer supports them, there are no security patches available for them, and while you can install different browsers to support only these ciphers, the browser is not the only issue. The operating system libraries don’t support the SHA2 certificate requirements native to modern software. eMDs, by policy, cannot and does not support operating systems not on this list.